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DARK LANTEHN.

(Application filed Apr. 6, 1898.)

(No Model.)

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UNTTED STATES PATENT OFFICE.

ROSS MERRIT'I GRISWOLD PHILLIPS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OFONE-HALF TO JOSEPH A. SMITH, OF SAME PLACE.

DARK LANTERN.

SPECIFICATION forming part of Letters Patent No. 614,341, dated November15, 1898.

Application filed April 6 1898. Serial No. 676,656. (No model.)

T0 all whom it may concern/.-

Be it known that I, ROSS MERRITT GRIS- W OLD PHILLIPS, of Los Angeles,inthe county of Los Angeles and State of California, have invented a newand useful Improvement in Dark Lanterns, of which the following is afull, clear, and exact description.

The object of my invention is to provide a dark lantern of simple,durable,and economic construction and to provide a means whereby twoslides are operated from a single trip or lever, one slide acting todirect the light downward and the other slide when opened permitting thelight to shine straight ahead.

Another object of the invention is to provide a means whereby the slidesmay be conveniently locked in their open position and whereby,furthermore, the entire lantern may be comparatively cool even after thelamp therein has been lighted for a length oftime.

Another object of the invention is to provide a convenient means forplacing the lamp within the body of the lantern or removing the lamptherefrom and to also provide a means whereby the lamp will not beaffected by currents of air, thus to a great extent obv viating smokingof the lamp and preventing the obnoxious odors incident to the use ofordinary lanterns of this type.

The invention consists in the ,novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of the lan- Fig. 2 is a vertical sectionon the line 2 2 of Fig. 3 Fig. 3 is a vertical section on the line 2 2of Fig. 2, and Fig. 4 is a horizon- `tal section on the line 4 4 of Fig.2.

The body of the lantern consists of a casing which may be given anyshape,'but is by preference made with straight front, rear, and sidesurfaces. The casing A is provided at or near its upper edge with aseries of apertures 10 for the admission of air, and at one side isprovided with a clamp 11, whereby the lantern may be attached to a belt,if desired. At each side of the back of the lantern a hanlower end ofsaid side, and a pin 15 is carried p through the said slot and isadapted to slide therein, the pin being also so shaped that it cannot bewithdrawn from the said slot.

An auxiliary casing 16 is located within the main casing. The auxiliarycasing is of less dimensions than the main casing and is spacedtherefrom at all sides. The auxiliary casing 16 consists of two sidepieces, the top portions of which are usually given a downward andrearward slant, and a back section, an open panel being formed at thefront to receive a lens 18, and preferably at the top and bottom of thesides of the auxiliary casing 16 apertures (designated as 17 and 17a)are made for the admission of air, as shown best in Fig. 2. Theauxiliary casing is attached to the main casing preferably through themedium of brackets 16a, located at the back portions of said casings. Anopening 19 is made in the front of the main casing, and the lens 18 isplaced back of this opening.

The lamp B may be of any improved construction, and the burner of thelamp is preferably located near its forward end. A spring'- arm 20 islocated at each side of the lamp, and each spring -arm is provided withan outwardly-extending tongue 21, and when the lamp is carried upwardwithin the outer and the auxiliary casing, as shown in Figs. 2 and 3,the tongues 21 will enter openings 22 made in the sides of the auxiliarycasing, as shown particularly in Fig. 3. The wick-spindle 23 extendsbeyond the outer or main casing A, being passed through slots 24E and 25made, respectively, in the auxiliary and the main casing, usually at therear, as shown in Fig. 2. Openings 26 are made in the bottom of the maincasing A at each side in order that the spring-arms 2O on the lamp maybe oper ated.

The chimney C for the lamp consists, preferably, of two side pieces 27,between which side pieces at the reara reflector 28 is secured, thefront of the chimney O and that part at IOC the rear of the lens 1Sbeing open, and the reector and front portion of the chimney connectwith a circular section 29, which constitutes the top of the chimney andextends slightly beyond the top of the main casing.

Two slides D and E are employed, both of which slides may be operatedtogether or one independent of the other. The slide D consists of twoside pieces 30, which are somewhat triangular, and their lower and wideredges are convexed, while at the contracted portions of the side piecesthey are pivoted upon a pin 31, secured in the casing at the upperportion of the opening 19. The side pieces of the slide D are connectedat the front by a plate 33, which is provided with an opening 34 thefull length of the lens 18. The slide E consists of a plate having apanel 35 upon its inner side adapted to neatly iit into the opening 34in the front of the slide D, and the plate or body of the slide E isprovided with an extension 36 at the top, which extension is likewisepivoted on the pin 31. A slot 37is made in the front plate 33 of theslide D, adjacent to the bottom of the opening 34,

and a double button 3S has movement in thisslot, the outer portion ofthe button being capable of extending over the lower end of the slide E,while the inner portion of the button is capable of being slid over thatportion of the main casing which is at the bottom of its front opening19. When the button is slid upward, the slide E is locked to the slideD, and when the two slides are closed and the button 33 is slid downwardthe inner slide D will be locked to the casing.

Bars 39 are attached to each side ot' the upwardly-extending portion 36of the slide E. The bars 39 are connected at their rear ends by a rod40, and one member of an angle-lever 41 is secured to the rod 40, theother member extending out through an opening 43 at the rear of the maincasing. The pivot for the lever is designated as 42, and the lever isheld normally in a position to keep the slides closed by means of aspring 44. (Shown best in Fig. 2.) The outer end of the lever ispreferably given an upward inclination, and when the two slides areconnected and the outer end of the lever is pressed downward the twoslides will be carried from the body and held at an inclination thereto,so as to throw the direct light from the lens downward, and the slidemay be held in this position, which is shown in Figs. l and 2, bysliding the pin 15 upward until it shall enter a recess 32, made in thelower edge of a side piece of the slide D, the recess being near therear of the slide, as shown in Fig. 1, and when the slides are closedagainst the body a shoulder 32 will engage with the said pin, preventingthe slides from being forced inward beyond their proper position. The

slides being closed and it is desired to direct the light ahead, thebutton 38 is carried downward, securing the inner slide D to the maincasing in the manner heretofore described. The outer slide E will now befree to move from the inner slide the moment that the outer end of thelever 41 is pressed downward. The slide E may be carried to a horizontalposition and held in this position by carrying the longer handle 12 overthe han-v dle end of the lever 41.

The body of the lantern is provided with a cap F. This cap is so made asto keep substantially cool and to prevent drafts of air from interferingwith the llame. The cap consists of an outer or main perforated shell 45and an inner shell 46, spaced therefrom to provide a chamber 47, (shownin Fig. 2,) and at each end of the inner shell 46 an apertured flange47a is formed, which flanges conneet with the end portion of the mainshell 45. In order to render the cap as cool as possible, a sheet 4S ofmica is made to closely engage with the inner face of the inner shell,and sheets 49 of mica are also placed for the same purpose between thesides of the chimney C and the sides of the inner or auxiliary casing 16of the body of the lantern, as shown in Fig. 3.

At each end of the combined shells 45 and 46 bottom transverse bars 49are provided, by means of which the combined shells are screwed orotherwise secured upon the top portion of the main casing. Adeiecting-box G is removably placed within the combined shells, and thisbox consists of a bottom 51, sides extending upward from the bottom, andan arched top 50, the curvature of the top 50 being less than thecurvature of the combined shells 45 and 46, providing a chamber 50abetween the upper portion of the deiiecting-box and the said shells,through which chamber the air may circulate through the end portions ofthe cap. An openingis made in the bottom 5l of the deflecting-box toreceive the upper tubular portion 29 of the chimney C, as shown in Fig.2. An angular plate 52 is located at one end of the deflecting-box,extending from the bottom of the box upward and from thence horizontallyinward within the boX,as shown in Fig. 2. At the opposite end of thedetlecting-box a second 'angular plate 53 is provided, which extendsfrom the end upward not as far as the corresponding member of theopposing plate 52; but the horizontal member of the plate 53 extendsfarther Within the deliecting-box than the plate 52,

terminating at a point below the horizontal l member of the plate 52, asis also shown in Fig. 2. A third deflecting-plate 54, also of angularconstruction, is attached to the upper portion of the deflecting-plate53 near the outer end of said latter plate, and the thirddeiiecting-plate 54 extends upward from the plate 53 and thencediagonally within the defleeting-box over the horizontal member of thedeflecting-plate 52. In this construction the outlet for the products ofcombustion is circuitous, and the air cannot in any manner enter thebody of the lantern with sufliL cient force to harm the flame.

IOO

IIO

The parts of the lantern are readily disconnected for the purpose ofcleansing it or for repair, and the parts may be readily andconveniently assembled.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a dark lantern, two slides, an operating devicecommon to both slides, and means for locking one slide to the other, forthe purpose set forth.

2. In a dark lantern, two pivoted slides for the lens, and alockingdevice for connecting the slides, whereby one slide may be openedindependent of the other or both slides may be opened together, as andfor the purpose specified. 1

3. The combination, with a dark lantern and its lens, of a slide pivotedto the lantern, consisting of side pieces arranged to extend along thesides of the lens-support, and a front plate having an opening for thepassage of light, and a locking device adjacent to said opening, asecond pivoted slide arranged to cover the opening in the front of thefirstnamed slide, and also adapted for engagement with the said lockingdevice, and means, substantially as described, for rocking one of theslides upon its pivot, for the purpose set forth.

4. In a dark lantern, the combination,with the casing of the lantern andits lens, of an inner slide comprising` pivoted side pieces arranged topass at the sides of the lens-support, and a front piece having anopening` for the passage of light and a locking device adjacent to theopening, an outer slide consisting of a pivoted plate arranged tonormally close the opening in the inner slide, the outer slide beingadapted for engagement by the said locking device, a lever, and aconnection between the lever and the outer slide, substantially asdescribed.

5. In a dark lantern, the combination,with the casing and the lens, ofan inner slide pivoted at a point above the lens and comprising sidepieces adapted to pass at'the sides of the lens, and a front piecehaving an opening therein for the passage of light, and a lockingdevice, an outer slide pivoted on the same support as the inner slideand arranged to normally close the opening in the front of the innerslide, and furthermore arranged for engagement with the locking deviceof the inner slide, a lever and a connection between the outer slide ata point above its pivot and the said lever, and means, substantially asdescribed, for locking either slide in an open position, as specied.

6. In a dark lantern, the combination,with a body, of a cap therefor,the cap consisting of an outer perforated shell, an inner shell and aperforated connection between the two shells, the shells being adaptedfor attachment to the said body of the lantern, and a deflecting-boxremovably located within the shells, comprising a body portion open atboth ends and having a bottom adapted to receive the chimney of thelantern, and a top which is spaced from the combined shells, angulardeecting-plates located within the said box, one at each end, the saidplates having their horizontal members at different elevations andextending one over the other, and a third angular deecting-plateattached to one of the end deflecting-plates, and carried over theopposing end deflecting-plate, for the purpose set forth.

'7. In a dark lantern, the combination,with a main casing open at thebottom and provided with a deecting-cap, a second casing spaced from themain casing and iixedly attached thereto, the inner casing beingprovided with a lens, of a detachable lamp arranged to enter the innercasing, a chimney for the said lamp, having a deliector and being inconnection with the said deecting-cap, a double slide for the lens, theslides being capable of being opened independently or together,andmeans, substantially as described, for operating the said slides, asspecified.

8. In a dark lantern, a plurality of slides, and means for operating theslides together, and also for operating one slide independently, for thepurpose set forth.

ROSS llIERRlT'l GRISWOLD PHILLIPS.

